#!/bin/sh
if [ $(id -u) -ne 0 ] ; then
	echo 'this script should be run as root instead!'
	exit 1
fi

USER_NAME='loek'
HOST_NAME='drvo'
KERNEL_VERSION='6.6.15-ti-rt-arm32-r1' # latest i could find for ti

# fail ok
fok() { "$@" 1> /dev/null 2> /dev/null ; }

echo "setting hostname to $HOST_NAME..."
hostname $HOST_NAME
hostname > /etc/hostname
sed -i 's/\<BeagleBone\>/'"$HOST_NAME"'/g' /etc/hosts

echo "creating user $USER_NAME..."
fok userdel debian
rm -rf /home/debian
fok id -u $USER_NAME || fok adduser $USER_NAME

echo "removing all security..."
rm -f /etc/sudoers.d/admin
cat << "EOF" > /etc/sudoers.d/nopasswd
%sudo ALL=(ALL:ALL) NOPASSWD: ALL
EOF
usermod -aG sudo $USER_NAME
cat << "EOF" > /etc/ssh/sshd_config.d/rice.conf
PasswordAuthentication yes
PermitEmptyPasswords yes
PermitRootLogin yes
PrintLastLog no
EOF
systemctl restart ssh
fok passwd -d root
fok passwd -d $USER_NAME

echo "fixing terminal colors & default editor..."
cat << "EOF" > /etc/profile.d/rice.sh
export TERM="xterm-256color"
export EDITOR="nvim"
EOF

echo "removing bloatware..."
fok apt remove -y --allow-change-held-packages \
	libruby2.7 libgl1-mesa-dri python3-numpy mesa-vulkan-drivers \
	bb-beagle-config libflite1 firmware-libertas python3-mypy libgtk-3-common \
	adwaita-icon-theme firmware-atheros firmware-misc-nonfree \
	pocketsphinx-en-us scratch libwebkit2gtk-4.0-37 firmware-iwlwifi \
	bb-node-red-installer firefox-esr bb-code-server plymouth xserver-xorg-core \
	xserver-xorg xserver-xorg-legacy x11-common x11-server-utils x11-utils \
	lightdm-gtk-greeter lightdm xfce4-session xfce4-panel xfce4-settings \
	xfce4-helpers fonts-dejavu-core nodejs nodejs-doc nginx-core nginx-common \
	nginx mesa-va-drivers bluetooth bluez pipewire-bin pipewire pulseaudio-utils \
	pulseaudio gtk-update-icon-cache wpasupplicant fontconfig-config fontconfig \
	hostapd adwaita-icon-theme hicolor-icon-theme polkitd whiptail
echo "removing more bloatware..."
fok apt autoremove -y
echo "cleaning up trash..."
fok apt clean -y

echo "updating system..."
fok apt-get update
fok apt-get upgrade -y

echo "preparing for debian sid update..."
export DEBIAN_FRONTEND=noninteractive
echo "usrmerge usrmerge/autoconvert boolean true" | debconf-set-selections
fok apt-get install usrmerge -y
cat << "EOF" > /etc/apt/sources.list
deb http://deb.debian.org/debian sid main contrib non-free
deb [arch=armhf signed-by=/usr/share/keyrings/rcn-ee-archive-keyring.gpg] http://repos.rcn-ee.com/debian/ sid main
EOF
fok apt-get update
echo "updating to debian sid..."
apt-get dist-upgrade -y

echo "removing noisy banners..."
rm -f /etc/motd /etc/issue /etc/issue.net /etc/dogtag

echo "install newer linux kernel..."
fok apt-get install -y linux-image-$KERNEL_VERSION linux-headers-$KERNEL_VERSION

echo "install based software..."
fok apt-get install -y neovim zsh git systemd-resolved
fok chsh -s /bin/zsh $USER_NAME
fok chsh -s /bin/zsh root

cp /etc/zsh/newuser.zshrc.recommended "/home/$USER_NAME/.zshrc"
chown "$USER_NAME:$USER_NAME" "/home/$USER_NAME/.zshrc"
cat << "EOF" > /root/.zshrc
# Set up the prompt
autoload -Uz promptinit
promptinit
prompt redhat

setopt histignorealldups sharehistory

# Use emacs keybindings even if our EDITOR is set to vi
bindkey -e

# Keep 1000 lines of history within the shell and save it to ~/.zsh_history:
HISTSIZE=1000
SAVEHIST=1000
HISTFILE=~/.zsh_history

# Use modern completion system
autoload -Uz compinit
compinit

zstyle ':completion:*' auto-description 'specify: %d'
zstyle ':completion:*' completer _expand _complete _correct _approximate
zstyle ':completion:*' format 'Completing %d'
zstyle ':completion:*' group-name ''
zstyle ':completion:*' menu select=2
zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
zstyle ':completion:*' matcher-list '' 'm:{a-z}={A-Z}' 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=* l:|=*'
zstyle ':completion:*' menu select=long
zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
zstyle ':completion:*' use-compctl false
zstyle ':completion:*' verbose true

zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
EOF
echo "emulate sh -c 'source /etc/profile'" >> /etc/zsh/zprofile

echo "cleaning up trash..."
fok apt clean -y

echo "all done!"